کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4997140 1459904 2017 36 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Fouling reduction using adsorbents/flocculants in a submerged anaerobic membrane bioreactor
ترجمه فارسی عنوان
کاهش غلظت با استفاده از جاذب / فلکشن در یک بیوراکتور غشایی بی هوازی غوطه ور
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
چکیده انگلیسی
Using adsorbents/flocculants in anaerobic membrane bioreactors (AnMBRs) to reduce membrane fouling is comparatively rare. This study evaluated 8 additives: 3 powdered activated carbons, 2 granular activated carbons, 1 cationic polymer, and 2 metal salts to identify the best additive and dose to minimise membrane fouling. Small cross flow filtration tests showed 400 mg/L PAC SAE2, or 150 mg/L FeCl3, reduced the transmembrane pressure (TMP) rise from 0.94 to 0.06 kPa/h, indicating excellent fouling reduction. The best filtration performance correlated with a significant reduction in supernatant supracolloidal particles, colloids and SMPs. FESEM-EDX showed that PAC SAE 2 and FeCl3 reduced the thickness of the fouling layer dramatically, while FeCl3 increased sludge floc size and particle size of the colloids, while decreasing the negative charge of colloids, and SMP size. Furthermore, Fe was not found in the supernatant or effluent, but precipitated with the solids, which is beneficial for its long-term use.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 239, September 2017, Pages 226-235
نویسندگان
, , ,